Planning to relax on a Cape beach or heading to a cookout over Memorial Day weekend? Keep a close eye on the weather forecast because there’s a good amount of uncertainty about whether it will be rainy for the unofficial start of summer.

It should be a fairly quiet weather week ahead for Massachusetts, but the National Weather Service said there’s “still a fair amount of uncertainty heading into Memorial Day weekend.”

Both Saturday and Sunday have the potential for rain.

“There’s a lot of uncertainty when it comes to next weekend,” Torry Gaucher, meteorologist at the National Weather Service’s Boston office, told the Herald on Sunday.

“The guidance isn’t in the best of agreement,” he added. “So it’s a little too soon to put any fine details on next weekend’s forecast at this point, unfortunately.”

Ahead of the holiday weekend, dry and quiet weather is expected through a good portion of Wednesday.

It will be quite the temperature contrast across southern New England on Monday. Some spots of interior Massachusetts could see temps rise into the 70s, while eastern areas of the Bay State will be cooler in the 60s due to onshore winds.

Wednesday will be warmer in Boston because the onshore winds will be gone. Temps should be in the 70s. Then a cold front may bring scattered showers late Wednesday, but a washout is not expected.

A shot of cooler air then lies behind the cold front for the latter part of the week. Boston should be in the lower 60s on Thursday, Friday and Saturday.

“While deterministic runs would suggest a washout of a weekend, viewing the ensembles there is a wide range of possibilities between dry and a washout,” the National Weather Service’s forecast discussion reads.

Meanwhile, the U.S. Drought Monitor continues to report that southeastern Massachusetts and the Cape and Islands remain abnormally dry. That is about 25% of the Bay State.